Release version 2.2.0

New and Noteworthy in Version 2.2.0

• Fix for Janos#9: Add method to create an EdmProvider based on Annotations (accordingly annotated classes)
• Fix for Janos#8: All fields of an POJO are handled as @EdmProperty by default (if no
  fields with annotations (beside @EdmKey) is found)
• Updated Apache Olingo to version 2.0.6 and because Olingo updated to GSon 2.4 also updated Gson.
• Switch to real Semantic Versioning. Based on this decision it is possible that next version will be 3.0 instead of 2.2, however the API did not changed, hence the release version is now 2.2.0.